diff --git a/fusee/fusee-secondary/src/kip.h b/fusee/fusee-secondary/src/kip.h
index b0e9a5711..08e2a680f 100644
--- a/fusee/fusee-secondary/src/kip.h
+++ b/fusee/fusee-secondary/src/kip.h
@@ -14,7 +14,7 @@ typedef struct {
     uint32_t size;
     uint32_t num_processes;
     uint32_t _0xC;
-    unsigned char kip_data[];
+    uint8_t kip_data[];
 } ini1_header_t;
 
 typedef struct {
@@ -35,13 +35,12 @@ typedef struct {
     uint8_t flags;
     kip_section_header_t section_headers[6];
     uint32_t capabilities[0x20];
-    unsigned char data[];
+    uint8_t data[];
 } kip1_header_t;
 
-static inline uint64_t kip1_get_size_from_header(kip1_header_t *header) {
+static inline size_t kip1_get_size_from_header(kip1_header_t *header) {
     /* Header + .text + .rodata + .rwdata */
     return 0x100 + header->section_headers[0].compressed_size + header->section_headers[1].compressed_size + header->section_headers[2].compressed_size;
 }
 
-
-#endif
\ No newline at end of file
+#endif
diff --git a/fusee/fusee-secondary/src/package2.c b/fusee/fusee-secondary/src/package2.c
index 25fb24877..19fef1d81 100644
--- a/fusee/fusee-secondary/src/package2.c
+++ b/fusee/fusee-secondary/src/package2.c
@@ -233,11 +233,19 @@ void package2_patch_kernel(void) {
 void package2_patch_ini1(void) {
     /* TODO: Do we want to support loading another INI from sd:/whatever/INI1.bin? */
     ini1_header_t *inis_to_merge[STRATOSPHERE_INI1_MAX] = {0};
+    ini1_header_t *merged;
+
     inis_to_merge[STRATOSPHERE_INI1_EMBEDDED] = stratosphere_get_ini1();
     inis_to_merge[STRATOSPHERE_INI1_PACKAGE2] = (ini1_header_t *)g_package2_sections[PACKAGE2_SECTION_INI1];
 
     /* Merge all of the INI1s. */
-    g_patched_package2_header->metadata.section_sizes[PACKAGE2_SECTION_INI1] = stratosphere_merge_inis(g_package2_sections[PACKAGE2_SECTION_INI1], inis_to_merge, STRATOSPHERE_INI1_MAX);
+    merged = stratosphere_merge_inis(inis_to_merge, STRATOSPHERE_INI1_MAX);
+    memcpy(g_package2_sections[PACKAGE2_SECTION_INI1], merged, merged->size);
+    g_patched_package2_header->metadata.section_sizes[PACKAGE2_SECTION_INI1] = merged->size;
+
+    /* Free temporary buffers. */
+    free(merged);
+    stratosphere_free_ini1();
 }
 
 void package2_fixup_header_and_section_hashes(void) {
diff --git a/fusee/fusee-secondary/src/stratosphere.c b/fusee/fusee-secondary/src/stratosphere.c
index e592d110d..a1023ebc8 100644
--- a/fusee/fusee-secondary/src/stratosphere.c
+++ b/fusee/fusee-secondary/src/stratosphere.c
@@ -6,74 +6,84 @@
 #include "stratosphere.h"
 #include "sd_utils.h"
 
-static uint8_t *g_stratosphere_ini1;
-static bool g_initialized_stratosphere_ini1 = false;
-
-static uint8_t *g_ini1_buffer;
-
-void stratosphere_allocate_mem(void) {
-    /* TODO call it*/
-    g_stratosphere_ini1 = (uint8_t *)malloc(PACKAGE2_SIZE_MAX);
-    g_ini1_buffer = (uint8_t *)malloc(PACKAGE2_SIZE_MAX);
-}
-
-void stratosphere_free_mem(void) {
-    /* TODO call it*/
-    free(g_stratosphere_ini1);
-    free(g_ini1_buffer);
-}
+static ini1_header_t *g_stratosphere_ini1 = NULL;
 
 ini1_header_t *stratosphere_get_ini1(void) {
-    ini1_header_t *ini1_header = (ini1_header_t *)g_stratosphere_ini1;
-    if (g_initialized_stratosphere_ini1) {
-        return ini1_header;
+    if (g_stratosphere_ini1 != NULL) {
+        return g_stratosphere_ini1;
     }
-    ini1_header->magic = MAGIC_INI1;
-    ini1_header->size = sizeof(ini1_header_t);
-    ini1_header->num_processes = 0;
-    ini1_header->_0xC = 0;
+
+    size_t size = 0; /* TODO */
+    g_stratosphere_ini1 = (ini1_header_t *)malloc(size);
+
+    if (g_stratosphere_ini1 != NULL) {
+        printf("Error: stratosphere_get_ini1: out of memory!\n");
+        generic_panic();
+    }
+
+    g_stratosphere_ini1->magic = MAGIC_INI1;
+    g_stratosphere_ini1->size = sizeof(ini1_header_t);
+    g_stratosphere_ini1->num_processes = 0;
+    g_stratosphere_ini1->_0xC = 0;
 
     /* TODO: When we have processes, copy them into ini1_header->kip_data here. */
 
-    g_initialized_stratosphere_ini1 = true;
-    return ini1_header;
+    return g_stratosphere_ini1;
+}
+
+void stratosphere_free_ini1(void) {
+    free(g_stratosphere_ini1);
+    g_stratosphere_ini1 = NULL;
 }
 
 /* Merges some number of INI1s into a single INI1. It's assumed that the INIs are in order of preference. */
-size_t stratosphere_merge_inis(void *dst, ini1_header_t **inis, unsigned int num_inis) {
+ini1_header_t *stratosphere_merge_inis(ini1_header_t **inis, size_t num_inis) {
     char sd_path[0x100] = {0};
+    uint32_t total_num_processes = 0;
+
     /* Validate all ini headers. */
-    for (unsigned int i = 0; i < num_inis; i++) {
+    for (size_t i = 0; i < num_inis; i++) {
         if (inis[i] == NULL || inis[i]->magic != MAGIC_INI1 || inis[i]->num_processes > INI1_MAX_KIPS) {
             printf("Error: INI1s[%d] section appears to not contain an INI1!\n", i);
             generic_panic();
+        } else {
+            total_num_processes += inis[i]->num_processes;
         }
     }
 
-    uint64_t process_list[INI1_MAX_KIPS] = {0};
+    if (total_num_processes > INI1_MAX_KIPS) {
+        printf("Error: The resulting INI1 would have too many KIPs!\n");
+        generic_panic();
+    }
+
+    uint64_t process_list[INI1_MAX_KIPS] = {0};
+    ini1_header_t *merged = (ini1_header_t *)malloc(PACKAGE2_SIZE_MAX); /* because of SD file overrides */
+
+    if (merged == NULL) {
+        printf("Error: stratosphere_merge_inis: out of memory!\n");
+        generic_panic();
+    }
 
-    memset(g_ini1_buffer, 0, PACKAGE2_SIZE_MAX);
-    ini1_header_t *merged = (ini1_header_t *)g_ini1_buffer;
     merged->magic = MAGIC_INI1;
     merged->num_processes = 0;
     merged->_0xC = 0;
     size_t remaining_size = PACKAGE2_SIZE_MAX - sizeof(ini1_header_t);
+    size_t read_size;
 
     unsigned char *current_dst_kip = merged->kip_data;
 
     /* Actually merge into the inis. */
-    for (unsigned int i = 0; i < num_inis; i++) {
-        uint64_t offset = 0;
-        for (unsigned int p = 0; p < inis[i]->num_processes; p++) {
+    for (size_t i = 0; i < num_inis; i++) {
+        size_t offset = 0;
+        for (size_t p = 0; p < (size_t)inis[i]->num_processes; p++) {
             kip1_header_t *current_kip = (kip1_header_t *)(inis[i]->kip_data + offset);
             if (current_kip->magic != MAGIC_KIP1) {
-                printf("Error: INI1s[%d][%d] appears not to be a KIP1!\n", i, p);
+                printf("Error: INI1s[%zu][%zu] appears not to be a KIP1!\n", i, p);
                 generic_panic();
             }
 
-
             bool already_loaded = false;
-            for (unsigned int j = 0; j < merged->num_processes; j++) {
+            for (uint32_t j = 0; j < merged->num_processes; j++) {
                 if (process_list[j] == current_kip->title_id) {
                     already_loaded = true;
                     break;
@@ -84,23 +94,29 @@ size_t stratosphere_merge_inis(void *dst, ini1_header_t **inis, unsigned int num
             }
 
             /* TODO: What folder should these be read out of? */
-            snprintf(sd_path, sizeof(sd_path), "atmosphere/titles/%016llx/%016llx.kip", current_kip->title_id, current_kip->title_id);
+            snprintf(sd_path, sizeof(sd_path), "atmosphere/titles/%016llX/%016llX.kip", current_kip->title_id, current_kip->title_id);
 
             /* Try to load an override KIP from SD, if possible. */
-            if (read_sd_file(current_dst_kip, remaining_size, sd_path)) {
+            read_size = read_sd_file(current_dst_kip, remaining_size, sd_path);
+            if (read_size != 0) {
                 kip1_header_t *sd_kip = (kip1_header_t *)(current_dst_kip);
-                if (sd_kip->magic != MAGIC_KIP1) {
+                if (read_size < sizeof(kip1_header_t) || sd_kip->magic != MAGIC_KIP1) {
                     printf("Error: %s is not a KIP1?\n", sd_path);
                     generic_panic();
                 } else if (sd_kip->title_id != current_kip->title_id) {
                     printf("Error: %s has wrong Title ID!\n", sd_path);
                     generic_panic();
                 }
-                uint64_t sd_kip_size = kip1_get_size_from_header(sd_kip);
-                remaining_size -= sd_kip_size;
-                current_dst_kip += sd_kip_size;
+                size_t expected_sd_kip_size = kip1_get_size_from_header(sd_kip);
+                if (expected_sd_kip_size != read_size) {
+                    printf("Error: %s has wrong size or there is not enough space (expected 0x%zx, read 0x%zx)!\n",
+                    sd_path, expected_sd_kip_size, read_size);
+                    generic_panic();
+                }
+                remaining_size -= expected_sd_kip_size;
+                current_dst_kip += expected_sd_kip_size;
             } else {
-                uint64_t current_kip_size = kip1_get_size_from_header(current_kip);
+                size_t current_kip_size = kip1_get_size_from_header(current_kip);
                 if (current_kip_size > remaining_size) {
                     printf("Error: Not enough space for all the KIP1s!\n");
                     generic_panic();
@@ -115,8 +131,5 @@ size_t stratosphere_merge_inis(void *dst, ini1_header_t **inis, unsigned int num
     }
     merged->size = sizeof(ini1_header_t) + (uint32_t)(current_dst_kip - merged->kip_data);
 
-    /* Copy merged INI1 to destination. */
-    memcpy(dst, merged, merged->size);
-
-    return merged->size;
+    return merged;
 }
diff --git a/fusee/fusee-secondary/src/stratosphere.h b/fusee/fusee-secondary/src/stratosphere.h
index 89160b688..399b699ec 100644
--- a/fusee/fusee-secondary/src/stratosphere.h
+++ b/fusee/fusee-secondary/src/stratosphere.h
@@ -9,7 +9,8 @@
 #define STRATOSPHERE_INI1_MAX      0x2
 
 ini1_header_t *stratosphere_get_ini1(void);
+void stratosphere_free_ini1(void);
 
-size_t stratosphere_merge_inis(void *dst, ini1_header_t **inis, unsigned int num_inis);
+ini1_header_t *stratosphere_merge_inis(ini1_header_t **inis, unsigned int num_inis);
 
-#endif
\ No newline at end of file
+#endif